22144511 has 2 divisors, whose sum is σ = 22144512. Its totient is φ = 22144510.

The previous prime is 22144471. The next prime is 22144541. The reversal of 22144511 is 11544122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144511 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22144541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072255 + 11072256.

It is an arithmetic number, because the mean of its divisors is an integer number (11072256).

Almost surely, 2^22144511 is an apocalyptic number.

22144511 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144511 is an equidigital number, since it uses as much as digits as its factorization.

22144511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 20.

The square root of 22144511 is about 4705.7954694185. The cubic root of 22144511 is about 280.8161180930.

Adding to 22144511 its reverse (11544122), we get a palindrome (33688633).

The spelling of 22144511 in words is "twenty-two million, one hundred forty-four thousand, five hundred eleven".